GREETINGS FROM iSTANBUL

[rikki cattermole]

It appears you are using the wrong lowercase character.

https://en.wikipedia.org/wiki/Dotted_and_dotless_I

 From a quick experiment, it appears std.uni is treating the upper case 
dotted I's lower case as a grapheme. Which it probably shouldn't be as 
there is an actual character for that.

We might need to update our unicode database... or something.